Jump to content

A Java Exception has occurred


Weioo

Recommended Posts

This is driving me insane right now. I don't even understand how I can't find an answer via google, much less understand how I screwed this up...It's the most simple of steps for setting up a server. Someone please tell me it's not me being an idiot, and something else!

 

I download latest minecraft_server.jar from minecraft.net

I open with winrar, open forge version 3.3.8 from june 13th with winrar

I then move (add & replace) all files from minecraft forge ZIP to minecraft_Server.jar

I close out of ZIP windows and attempt to run minecraft_Server.jar.... Pop up says "A Java Exception has occurred"

 

Help would be great, and thanks in advance.

Link to comment
Share on other sites

Seeing as I'm getting the same error, and I suspect it is related to the latest 1.3.1 update, here is the error output I've got.

 

Steps:

Download latest server JAR.

Download recommended Forge API zip.

Copy Forge API into JAR.

Attempt to launch, get error.

 

Server JAR runs fine without the Forge API classes added, and I've tried using your latest builds as well, hoping maybe you've fixed a 1.3.1 issue in them, but without success.

 

 

Exception in thread "main" java.lang.NoClassDefFoundError: um

        at java.lang.ClassLoader.defineClass1(Native Method)

        at java.lang.ClassLoader.defineClass(Unknown Source)

        at java.security.SecureClassLoader.defineClass(Unknown Source)

        at java.net.URLClassLoader.defineClass(Unknown Source)

        at java.net.URLClassLoader.access$100(Unknown Source)

        at java.net.URLClassLoader$1.run(Unknown Source)

        at java.net.URLClassLoader$1.run(Unknown Source)

        at java.security.AccessController.doPrivileged(Native Method)

        at java.net.URLClassLoader.findClass(Unknown Source)

        at java.lang.ClassLoader.loadClass(Unknown Source)

        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)

        at java.lang.ClassLoader.loadClass(Unknown Source)

        at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)

Caused by: java.lang.ClassNotFoundException: um

        at java.net.URLClassLoader$1.run(Unknown Source)

        at java.net.URLClassLoader$1.run(Unknown Source)

        at java.security.AccessController.doPrivileged(Native Method)

        at java.net.URLClassLoader.findClass(Unknown Source)

        at java.lang.ClassLoader.loadClass(Unknown Source)

        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)

        at java.lang.ClassLoader.loadClass(Unknown Source)

        ... 13 more

 

Link to comment
Share on other sites

Maybe,  I saw a specific version listed for older releases, but couldn't find any specific info saying if forge was or wasn't 1.3.1 compatible with the latest/recommended.  Hence I gave it a try, since it couldn't hurt.  I figured it wasn't compatible, no big deal, just gotta wait for an update.  Your initial response to this thread however suggested maybe it was supposed to be working. (As he stated he was using the latest version.)

 

Either way, problem resolved, keep on rolling with 1.2.5 for now.  Hopefully you get 1.3.1 support going soon, and thanks for the hard work!

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Unfortunately, your content contains terms that we do not allow. Please edit your content to remove the highlighted words below.
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.



  • Recently Browsing

    • No registered users viewing this page.
  • Posts

    • Turning the Tables: My Journey to Reclaim Stolen Bitcoins with Expert Help. When my Bitcoin wallet was hacked and my entire cryptocurrency portfolio was stolen, I felt utterly devastated and hopeless. Having worked hard to build up my digital assets, the sudden loss was gut-wrenching. It felt like my financial future had been ripped away in an instant, leaving me overwhelmed by a sense of betrayal and despair. In my search for help, I discovered TECH CYBER FORCE Recovery, a renowned cybersecurity firm specializing in cryptocurrency recovery. I was met with professionalism and empathy from my first contact with them. The team demonstrated a steadfast commitment to helping me retrieve my stolen Bitcoins. They understood the emotional toll of my situation and approached my case with genuine concern. TECH CYBER FORCE Recovery swung into action immediately, leveraging its extensive expertise in blockchain forensics and hacker tracking techniques. Their process was meticulous. They analyzed my transaction history, followed the digital trail left by the hackers, and worked diligently to pinpoint the location of the stolen funds. I was impressed by their technical prowess; they employed advanced cryptographic methods and strategic negotiations with the perpetrators, all while keeping me informed about their progress. The recovery process was complex and fraught with challenges. However, the tenacity displayed by the team was truly awe-inspiring. They navigated cryptocurrency crime's murky and ever-evolving landscape with skill and determination. After a series of strategic moves, they managed to recover the majority of my Bitcoins successfully.  
    • I removed giacomos_hud, oculus, (dont know what you mean with iris), enhanced_boss_bars, epicfight and essential.  Server still doesnt want to boot. new logs after removing: https://pastebin.com/LuM2PFtN I dont quite understand the "server side" and "client side" difference..
    • There are client side only mods in your server files   Remove giacomos_hud, oculus, iris, enhanced_boss_bars and epicfight You can keep these mods in your client Maybe also remove essentials
    • Here is my Log with java 17: https://pastebin.com/RPdWSjwq
    • Been working on creating a server for this mod, but i keep getting this error over and over again.  I have tried updating/changing the Forge launcher, Removing/replacing the ops.json and whitelist.json folders, and removing certain mods. Crash report log: https://pastebin.com/Bu046cVq Debug.log https://pastebin.com/7hKm40ke Latest.log https://pastebin.com/nCRLUH3b any help would be great thanks!
  • Topics

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.